Large-scale shell-model study of two-neutrino double beta decay of 82Se, 94Zr, 108Cd, 124Sn, 128Te, 130Te, 136Xe, and 150Nd

被引：7

作者：

Patel, Deepak ^{[1
]}

Srivastava, Praveen C. ^{[1
]}

Kota, V. K. B. ^{[2
]}

Sahu, R. ^{[3
]}

机构：

[1] Indian Inst Technol Roorkee, Dept Phys, Roorkee 247667, India

[2] Phys Res Lab, Ahmadabad 380009, India

[3] Natl Inst Sci & Technol, Palur Hills, Berhampur 761008, Odisha, India

来源：

NUCLEAR PHYSICS A | 2024年 / 1042卷

关键词：

Shell-model; Effective interactions; MATRIX-ELEMENTS; NUCLEI; ENHANCEMENT; TRANSITION; STATES;

D O I：

10.1016/j.nuclphysa.2023.122808

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

Large-scale shell-model calculations have been performed for the study of two-neutrino double -beta (2 ��) decay in 82Se, 94Zr, 108Cd, 124Sn, 128Te, 130Te, 136Xe, and 150Nd. We have employed JUN45 interaction to calculate the nuclear matrix element (NME) for 2 �� decay in 82Se. In the case of 94Zr, the glekpn effective interaction is used. For 108Cd, we have used a realistic effective interaction derived through the G-matrix approach. In the case of 124Sn, 128,130Te and 136Xe, the sn100pn effective interaction is employed. For 150Nd, we have used KHHE effective interaction based on holes in a 208Pb core. We have extracted the half-lives of these nuclei for the 2 �� decay with the help of calculated NME. Our results are consistent with the available experimental half-lives. The variation of cumulative 2 ��NME with respect to the excitation energy of the intermediate 1+ states is also shown, and in all cases, it is ensured that their values are almost saturated. In the present work we have calculated more intermediate 1+ states as much as possible in comparison to results available in the literature.

引用

页数：9

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